Binder bolt wrench



Sept. 13, 1932. ROYAL 1,877,595

BINDER BOLT WRENCH Filed April 10. 1931 2 Sheets-Sheet l orney Sept. 13,- 1932.

R. R. ROYAL BINDER BOLT wnsncn Filed April 10, 1931 2 Sheets-Sheet 2 Patented Sept. 13, 1932 ROBERT RUTHERFORD ROYAL, F PADUCAI-I, KENTUCKY BINDER norm WRENCH Application filed April 10,

My invention relates to railway rolling stock and consists particularly in a novel machine for applying and removing binder bolt nuts on the under side of a locomotive frame.

In locomotive construction, the pedestal binders are secured to the bottom ends of the pedestal legs after the driving boxes, axles, and wheels have been assembled with the frame, and the binders are removed occasionally when the locomotive is shopped for repairs. The binders are fastened to thepedestal legs by means of bolts andnuts, which nuts have heretofore been applied by hand. Due to the location of the binder bolts inside 5 the drivers, and their proximity to the drivers, a hand wrench cannot be easily operated and the nut may be turned only a short distance with each setting application and removal of these nuts by this method requires considerable time and labor.

The main object of my invention is to provide a device for quickly and efliciently applying and removing binder bolt nuts. tain this general object, and others later appearing, by the device illustrated inthe accompanying drawings in which Figure 1 is a side view of my invention installed in an engine pit and shows parts of a locomotive over the pit.

Figure 2 is a top view of my device taken on. line 2- -2 of Figure 1.

Figure 3 is a transverse section taken on line 3-3 of Figure 1.

Figure 45 is a vertical longitudinal section taken on line 4.4. of Figure 2.

Figure 5 is a sectional view of the wrench guiding arm and telescoping fulcrum therefor.

Figs. 6 and 7 are, respectively, detail sections at 90 of the upper and lower ends of the adjustable extension arm shown in Fig. 4:.

My binder nut wrench device includes a motor 1, shown as an air motor of well known type, a gear box 18, an extension arm includher 18a, and a socket Wrench 20, all supported on a cradle, to be described hereafter, which extends across the engine pit 3 and is movably mounted on tracks-or guideways 1 by means of wheels 5.

of the wrench. The- Tat ing sleeve 18 and an adjustable inner mem-.

The cradle is intended" 931. Serial R 529,069.

to be pushed by the operator along thelength of thepit to the desired location, but other propelling means may be provided, if desired. ,j

' Thecra-dle includes a pair of substantially U-shaped straps or bars 6 having their upper portions rigidly secured together by longi tudinal and transverse braces 7 and 7a, and 8' and 8a, respectively, and having their lower portions secured together by transverse and diagonal floor forming plates 9 and 10. A mechanism base plate 11 is pivotally mounted on the floor of the cradle at the intersection of diagonalelements 10 by means of a stud or rivet 12, and the air motor 1 and gear box 13 are rigidly secured to this plate. A dowel pin 12a is inserted through a hole in the base plate 11 and a corresponding perforation in floor member 9 to lock. the base plate in its operative position. When it is desired to work on the other side of the pit, the dowel 12a can be quickly re moved and the base plate swung around 180 and the locking dowel will then be positioned to co-operate with a hole 12?) in the cradle floor. Brace 7 a is bowed outwardly to permit rotation of the wrench mechanism.

A shaft 14, having a bevel gear 15 keyed to its outer end, projects from the motor and'is driven thereby, and the gear 15 meshes with another bevelgear 16 inside. the gear box 13. A spindle 17, rotatably mounted in the base plate 'of the cradle or bottom of the gear box, is keyed to gear 16 and'projects'up through the top .of the gear box. 5

Extension arm 18 includes I telescoping members, 18 and 18a and has a universal joint connectio'n 19,tofspindle 17 and av similar a connection with the socket'wrench20, the wrench being adapted to operatively engage binder bolt nuts-21. f The universal joints at each end of theteleScoping arm 18 permit the socket wrench 20 to be freely moved in any direction. I

] In order to guide and control the wrench, 9

I provide an arm 22, fulcrumed on a tele scopingbar :,23 which extends upwardly from the top of the gear box 13. The arm 22 has a forked end 24 pivotally mounting a collar 25 which loosely surrounds the lower portion of the socket wrench 20 and is adapted to bear against the enlarged upper portion of the wrench as the opposite end of the arm 22 is impelled downwardly by the operator. In Figure 4, a slightly modified form, collar 26 engages a groove 27 extending around wrench 25.

It will be seen that the cradle may be moved to any location longitudinally of the engine pit and the wrench mechanism may be revolved to either side so that any of the binder bolt nuts may be readily reached. In disassembling the binder from an underframe, it will usually be necessary tostart the nut by hand and then itmay run ofl from the bolt by the power wrench in a fraction of the time ordinarily required. In turning a nut onto a bolt, suflioient momentum will be developed, before the nut is seated, to set the nut as tightlyas necessary, and the nut may be allowed .to stall the motor without endangering the bolt threads or the wrench mechanism. If desired, the nut may be further tightened by hand in the usual manner.

Obviously, the use of my novel device is not limited to the application and removal of binder bolt nuts, but it may be equally advantageously used in various other operations where cramped conditions prevent the effective use of hand tools. Wrenches of various types and sizes may, of course, be substituted for the socket wrench shown and described and it would also be within the spirit of the invention to substitute a drill or a reamer or other rotary tool.

These and various othermodifications and variations from the spirit of my'invention and I contemplate the exclusive use vof all such variations as come within the-scope of my claims.

I claim: V

1. In combination, spaced guideways, "a cradle extending between saidguide'ways and movably mounted thereon, a mechanism revolvably mounted on saidcradle, a telescopic rotatable extension arm connected to said mechanism, a socket wrench on the outer end of said arm, said arm and wrench being rotated by said mechanism, saidmechanism being rotatable through substantially 360 degrees to position said wrench selectively over either guideway, and at a maximum'number of points along the same without movement of said carriage. V

'2. A binder bolt wrench device including a movable cradle, a telescopic extension arm rotatably supported by said cradle, means on said cradle for rotating said arm, a socket wrench having a universal joint connection with said arm,'a telescopic support member,

a lever fulcrumed to said memberand having a forked end, and a collar pivotally mounted in saidend and adapted toengage said wrench, when force is applied to the may be made withoutdepartingfree end of said lever, to hold said wrench in operative engagement with a nut.

3. A binder bolt wrench device including a movable cradle, a revolving telescopic extension member including a socket wrench, a telescopic support member, and a lever fulcrumed to said support member, said lever engaging said wrench .to hold the same in operating engagement with a nut.

4.1K binder bolt wrench device including a {base member, a telescoping extension arm rotatably supported by said member, means on said 'm'cmber for rotating said arm, a socret wrench having a universal joint connection with the outer end of said arm, a bar rigidly secured to said member, a lever fulcrumed on the upper end of said bar and havinga forkedend, acollarvpivotally mounted in said end and adapted to engage said wrench, when the opposite end of said lever s moved downwardly, to .hold said wrench in operative engagement with a nut.

5. In combination, a movable carriage, an arm extending outwardly therefrom and swingable to various positions relative thereto, a wrench on the end'of said arm, means for rotating said wrench, a standard on said carriage, and a lever pivoted to said standard and engaging said wrench, said lever being adapter, upon applicationof pressure to the free end thereof, to position and support said wrench.

.6. In combination, a pit having spaced guideways, a cradle mountedon said pit and adapted to be moved longitudinally along said guideways, drivingmechanism rotatably mounted on saidcrad le, and a socket wrench projecting from said mechanism and operable thereby, said mechanism'being rotatable through substantially 360 degrees relativeto said guideways and said wrench having a universal joint connection with said mocha nism whereby said wrench may be moved to, and operated in, a maximum numberof positions relative to said guideways in each position of said cradle.

In testimony whereof I hereunto aflix signature this tth day of April, 1931. Y

*R. R. ROYAL. 

